Add MongoDB Vector Search Tool (#319)

* INTPYTHON-580 Design and Implement MongoDBVectorSearchTool

* add implementation

* wip

* wip

* finish tests

* add todo

* refactor to wrap langchain-mongodb

* cleanup

* address review

* Fix usage of EnvVar class

* inline code

* lint

* lint

* fix usage of SearchIndexModel

* Refactor: Update EnvVar import path and remove unused tests.utils module

- Changed import of EnvVar from tests.utils to crewai.tools in multiple files.
- Updated README.md for MongoDB vector search tool with additional context.
- Modified subprocess command in vector_search.py for package installation.
- Cleaned up test_generate_tool_specs.py to improve mock patching syntax.
- Deleted unused tests/utils.py file.

* update the crewai dep and the lockfile

* chore: update package versions and dependencies in uv.lock

- Removed `auth0-python` package.
- Updated `crewai` version to 0.140.0 and adjusted its dependencies.
- Changed `json-repair` version to 0.25.2.
- Updated `litellm` version to 1.72.6.
- Modified dependency markers for several packages to improve compatibility with Python versions.

* refactor: improve MongoDB vector search tool with enhanced error handling and new dimensions field

- Added logging for error handling in the _run method and during client cleanup.
- Introduced a new 'dimensions' field in the MongoDBVectorSearchConfig for embedding vector size.
- Refactored the _run method to return JSON formatted results and handle exceptions gracefully.
- Cleaned up import statements and improved code readability.

* address review

* update tests

* debug

* fix test

* fix test

* fix test

* support azure openai

---------

Co-authored-by: lorenzejay <lorenzejaytech@gmail.com>

README.md

@@ -25,6 +25,7 @@ CrewAI provides an extensive collection of powerful tools ready to enhance your
 - **File Management**: `FileReadTool`, `FileWriteTool`
 - **Web Scraping**: `ScrapeWebsiteTool`, `SeleniumScrapingTool`
 - **Database Integrations**: `PGSearchTool`, `MySQLSearchTool`
+- **Vector Database Integrations**: `MongoDBVectorSearchTool`, `QdrantVectorSearchTool`, `WeaviateVectorSearchTool`
 - **API Integrations**: `SerperApiTool`, `EXASearchTool`
 - **AI-powered Tools**: `DallETool`, `VisionTool`, `StagehandTool`
 
@@ -226,4 +227,3 @@ Join our rapidly growing community and receive real-time support:
 - [Open an Issue](https://github.com/crewAIInc/crewAI/issues)
 
 Build smarter, faster, and more powerful AI solutions—powered by CrewAI Tools.
-